I'm glad someone else remembers him explicitly saying that, because @shax's comment was starting to make me worry that I had invented that memory due to other forum members making jokes about it.
I would say I genuinely do agree with @shax, though, in the sense that my suggestion is a clunky, and therefore bad, change. But I only think it's a bad change because it's clunky and not because it nerfs MA.
I think the real problem here is a tension in Zane's design:
1) Maximum Anarchy is, according to designer intent, supposed to be a weirdo, trick-shot move.
2) Maximum Anarchy is, in practical effect, integral to Zane's game plan in certain MUs.
These are more or less incompatible statements, excepting a very generous interpretation of what "weirdo, trick-shot" move means. If MA is a necessary tool, then Zane needs to always be able to reasonably access and play it. But if Zane can always reasonably access and play it, it is no longer a weirdo trick-shot thing to play. It's just another Really Good Super.
Of course, there are other ways to nudge it closer to being a "weirdo" move again. @Niijima-san's suggestion of making it 50.0 speed is a good example. But we would run into the same problem, I have to assume, that this makes him worse in MUs he already struggles in. (For full disclosure, I am not an experienced Zane player, so I am simply taking anything you all say about his match up numbers at face value. )
Of course, much of this comes down to the question of whether or not we care about preserving designer intent when we think about making changes to the game. Personally, I think designer intent is important and worth preserving. If we can brainstorm changes to the game that simultaneously bring it more balance while also maintaining, or even strengthening, designer intent, that is the gold standard. But there is a strong argument to be made that this whole "problem" I just raised can be wiped away by simply ignoring what Sirlin intended for the character and just implementing changes that are simple and effective.
That being said, if the reason we cannot make MA more difficult to use is because Zane's "plan A" does not work well in his bad MUs, forcing him to rely on MA as an equalizer, that seems to me like a prompt that we should think about how to fix his other tools so that making MA weirder becomes ok to do.